@misc{indiciaefe11a35aa607,
  title = {Arsenic data for streams in the uppper Missouri River Basin, Montana and Wyoming},
  author = {J. R. Knapton and A.A. Horpestad},
  year = {1987},
  doi = {10.3133/ofr87124},
  url = {https://pubs.usgs.gov/publication/ofr87124},
  note = {Source identifier: ofr87124}
}